Effects of wall wetting and in-cylinder fuel distribution in an advanced turbo-charged engine

作     者：ROSTAMPOUR A SHOJAEEFARD M H MOLAEIMANESH G R SAFAEI-ARSHI A ROSTAMPOUR A;SHOJAEEFARD M H;MOLAEIMANESH G R;SAFAEI-ARSHI A

作者机构：School of Automotive EngineeringIran University of Science and TechnologyNarmakTehran ***Iran School of Mechanical EngineeringIran University of Science and TechnologyNarmakTehran ***Iran 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2022年第29卷第7期

页      面：2165-2178页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：advanced port fuel injection(APFI) fuel film fuel distribution wall wetting heat transfer phenomena 

摘      要：One of the proposed concepts for spark ignition engines is advanced port fuel injection(APFI),which suggests using two port injectors for each *** this research,we numerically examine the capabilities of this concept in reducing fuel consumption and increasing engine *** results demonstrated that the use of this concept is very effective due to the use of two injectors and the possibility of reducing the spraying time and bringing the injection start time closer to the air inlet valve opening *** maximum amount of fuel film formed on the walls is reduced by about 75%,naturally,which leads to better and more homogeneous fuel distribution inside the combustion chamber and increases combustion *** results showed that under the same boundary conditions and engine operating point,the use of two port injectors for each cylinder leads to an increase of more than 20%of the maximum combustion chamber pressure and about 4%combustion *** the other hand,fuel film formation becomes worse in cold *** in this study,the capabilities of this concept in cold conditions were investigated *** have shown that the advanced port fuel injection,unlike conventional engines,is almost insensitive to inlet temperature changes.